Why does a green bar appear on the bottom of some iPhone photos?

Question

iPhone

As can be understood from the question, the problem is that in the photos on the iPhone 5s a thin green bar appears at the bottom, and in my opinion, only on uploaded ones (inaccurate information).
Example: Link
By the way, I often began to meet similar photos among users of the VKontakte social network.
Please let me know if anyone has experienced this and knows what the problem is.

Answer 1

When zoomed in, it can be seen that the contours of the image above the stripe affect the color change in this stripe. I can assume that there is a malfunction in the matrix / camera controller for 2 color channels: RED and BLUE, their sum is reset to the GREEN channel, forming a green band with different green intensity, which depends on the image.

Answer 2

The same "trouble" is observed when converting a video file to 480p and further viewing through vlc. If you watch the same video through a browser, then this bar is not there. I don't know if this is related somehow, but I hope the information will be useful =)

Answer 3

Is the image height a multiple of 8?